Answer:
Step-by-step explanation:
Let
x -----> the wind speed in mi/h
y ----> the wind chill in °F
we have
so
For x=38 mi/h
substitute in the linear equation and solve for y
Round to the nearest degree
Answer:
3.81 s
Step-by-step explanation:
Let's consider the following formula that represents the journey of a falling object.
d = 3 t + 5 t²
where,
- d is the distance measured in feet
- t is the time measured in seconds
We can find the time that it will take to travel 84 feet by replacing d = 84 in the equation.
84 = 3 t + 5 t²
5 t² + 3 t - 84 = 0
We have a = 5, b = 3 and c = -84. We apply the second grade solving formula.
x₁ = 3.81 and x₂ = -4.41
Since the time cannot be negative, the answer is t = 3.81 s
Answer:
The third one
Step-by-step explanation:
Answer:
33x1000
Step-by-step explanation:
STEP
1
:
1.1 10 = 2•5
(10)3 = (2•5)3 = 23 • 53
Equation at the end of step
1
: (33) • (x(2^3•5^3))
STEP 2 :
Equation at the end of step
2
: 33 • x1000
STEP
3
:
Final result :
33x1000
Of the 100 students, 37 take only Spanish. Subtracting 37 from 100 gives us 63 students who are taking either both Spanish and Chinese or only Chinese.
So, there are 63 students who are taking Chinese (just Chinese or both Chinese and Spanish).
Since the number of students taking Chinese is 8 more than the number of students taking Spanish, 63 - 8 + 55 students taking Spanish (just Spanish or both Spanish and Chinese).
Of these 55 students, 37 are only taking Spanish, therefore, 55 - 37 = 18 students who are taking both languages.
I guess a whole lot shorter way of looking at this is: for there to be 8 more students taking Chinese than Spanish, there must be 8 more students who are taking only Chinese than who are taking only Spanish: 37 + 8 = 45. Since 37 are taking only Spanish and 45 are taking only Chinese, 100 - (37 + 45) = 18 students who are taking both languages.